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131 samples matching your criteria
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Sample n°6674 : crust of black sulfidesMinerals: MIARGYRITEYear: 1954Country: Germany
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Sample n°6682 : bright crystals (3 mm), disseminated in pink rockMinerals: ARSENOPYRITEYear: 1954Country: Germany
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Sample n°6684 : bundle of crystals (1 cm), on altered sulfidesMinerals: MARCASITE QUARTZYear: 1954Country: Germany
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Sample n°6712 : microgranular metallic block (4 cm)Minerals: PYROLUSITEYear: 1954Country: Germany
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Sample n°6714 : purple-grey blocks with conchoidal fractureMinerals: MANGANESE OXIDESYear: 1954Country: Germany
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Sample n°6717 : golden crystals (5 mm) on limestoneMinerals: CHALCOPYRITEYear: 1954Country: Germany
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Sample n°6725 : block (5 cm) with mineralisation in layersMinerals: SPHALERITEYear: 1954Country: Germany
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Sample n°6744 : black metallic block (4 cm)Minerals: HAUSMANNITEYear: 1954Country: Germany
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Sample n°6746 : fragments of fibro-radial cryust (3 cm)Minerals: MANGANITEYear: 1954Country: Germany
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Sample n°6747 : block with black prismatic crystals (1 cm)Minerals: MANGANITEYear: 1954Country: Germany